Unix
curl https://prp-electronic-lab.areasciencepark.it/api/v2/experiments/56 -H "Authorization: 5-6d670f9518e94c92155f9e8ef317d76faf868de5ddb1e9318e689db28320616ea4e29ab74badb7556f945"


Windows POWERSHELL: 
curl -Uri "https://prp-electronic-lab.areasciencepark.it/api/v2/experiments/56" -Method Get -Headers @{ Authorization = '5-6d670f9518e94c92155f9e8ef317d76faf868de5ddb1e9318e689db28320616ea4e29ab74badb7556f945' }


Note: alias
Invoke-WebRequest